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Red Pepper

I planted red pepper and other colors of pepper and I want to know how much fertilizer I need to give the plant each week. At the moment I give each plant about one gram of 20-20-20 per week, as well as . 7 grams calcium and . 7 grams potassium per week. Is it okay or not ? Do I need to add more? It's really costly to risk anything, as I have greenhouses and it costs me a lot, so I need your help.